A cat rubs against people not only to be affectionate but also to mark out its territory with scent glands around its face. The tail area and paws also carry the cat's scent. - Provided by RandomHistory.com

4/2/12

The Norwalk virus or Norovirus (the virus that causes the stomach flu) can survive on an uncleaned carpet for a month or more. - Provided by RandomHistory.com

4/3/12

Some sharks, like the wobbegong and angel sharks, are so flat that they look like they're part of the sea floor. - Provided by RandomHistory.com

4/4/12

The Chinese were using the decimal system as early as the fourteenth century B.C., nearly 2,300 years before the first known use of the system in European mathematics. The Chinese were also the first to use a place for zero. - Provided by RandomHistory.com

4/5/12

Scientists are unclear as to why about 20% to 30% of autistic children develop epilepsy by the time they reach adulthood. - Provided by RandomHistory.com

4/6/12

During his second run for presidency, Teddy Roosevelt was shot by a would-be assassin while giving a speech in Milwaukee. He continued to deliver his speech with the bullet in his chest. - Provided by RandomHistory.com

4/7/12

Besides churches and monasteries, two other great medieval institutions derived much of their income from wine: hospitals and universities. The most famous medieval wine-endowed hospital (now a museum) is the beautiful Hotel-Dieu in Beaune, France. - Provided by RandomHistory.com

4/8/12

Nevada, Maine, and Oklahoma have the highest percentage of divorced adults. Arkansas and Oklahoma have the highest rates of people who have been married at least three times. - Provided by RandomHistory.com

4/9/12

The term 'marriage' derives from the Latin word mas meaning 'male' or 'masculine.' The earliest known use of the word in English dates from the thirteenth century. - Provided by RandomHistory.com

4/10/12

Women in the U.S. labor force currently earn just over 77 cents for every one dollar men earn. - Provided by RandomHistory.com

4/11/12

The usual modern life insurance policy will pay for death by suicide provided that the death occurs two years or more after the initiation of the policy. - Provided by RandomHistory.com

4/12/12

Oberlin College was the first college to grant degrees to women, in 1841. It was also the first college to grant a bachelor's degree to an African-American woman, in 1862. - Provided by RandomHistory.com

4/13/12

Approximately 1/3 of cat owners think their pets are able to read their minds. - Provided by RandomHistory.com

4/14/12

The first attempt to assassinate a president was on Andrew Jackson by Richard Lawrence, a house painter. Both of his guns misfired, however - an event that statisticians say could occur only once in 125,000 times. Andrew Jackson then chased Lawrence with his walking stick. - Provided by RandomHistory.com

4/15/12

At its peak, Rome included more than one million people. After the fall of the Roman Empire, the city's population fell dramatically to less than 50,000 people. In 2007, there were over 2.7 million people living in the greater Rome area. - Provided by RandomHistory.com

4/16/12

In the United States, over 3,000 deaths per year from lung cancer in nonsmokers are due to secondhand smoke. - Provided by RandomHistory.com

4/17/12

Researchers are unclear why boys are diagnosed with autism more than girls, but some think that the problem lies with the X chromosome, of which boys only have one. - Provided by RandomHistory.com

4/18/12

Approximately 90% of people with Type 2 diabetes are obese. - Provided by RandomHistory.com

4/19/12

Samuel Mudd, the doctor who treated the broken ankle of Lincoln assassin John Wilkes Booth and whose name led to the saying 'Your name is mud,' received a presidential pardon in 1869 from Ulysses S. Grant. - Provided by RandomHistory.com

4/20/12

The sun rotates on its axis once every 25.38 Earth days or 609.12 hours. - Provided by RandomHistory.com

4/21/12

Over 50% of all singles in America have not had a date in more than two years. - Provided by RandomHistory.com

4/22/12

Nigeria is the most populous country in Africa, with an estimated population of 125 - 145 million people. Egypt is the second most populous country with over 76 million people. - Provided by RandomHistory.com

4/23/12

Research has shown that dark chocolate reduces stress hormones such as cortisol and other fight-flight hormones. Additionally, cocoa is rich in antioxidants called flavonoids. - Provided by RandomHistory.com

4/24/12

Of the more than two million Americans that currently use cocaine, just over 700,000 are users of freebase or crack cocaine. - Provided by RandomHistory.com

4/25/12

Ping-pong is one of the most popular games in China, but it was not invented in China. It originated in Britain, where it is called table tennis. - Provided by RandomHistory.com

4/26/12

Dog nose prints are as unique as human finger prints and can be used to identify them. - Provided by RandomHistory.com

4/27/12

Mexico introduced chocolate, corn, and chilies to the world. - Provided by RandomHistory.com

4/28/12

The Beagle and Collie are the noisiest dogs, while the Akbash Dog and the Basenji are the quietest. - Provided by RandomHistory.com

4/29/12

Sugar and cocoa are often added to cigarettes, a fact many diabetic smokers are unaware of. - Provided by RandomHistory.com

4/30/12

A cat can travel at a top speed of approximately 31 mph (49 km) over a short distance. - Provided by RandomHistory.com